CN104399496A - Cobalt diselenide modified carbon fiber composite material and preparation method and application thereof - Google Patents
Cobalt diselenide modified carbon fiber composite material and preparation method and application thereof Download PDFInfo
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- CN104399496A CN104399496A CN201410706177.3A CN201410706177A CN104399496A CN 104399496 A CN104399496 A CN 104399496A CN 201410706177 A CN201410706177 A CN 201410706177A CN 104399496 A CN104399496 A CN 104399496A
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- 239000002131 composite material Substances 0.000 title claims abstract description 69
- -1 Cobalt diselenide modified carbon fiber Chemical class 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 36
- 239000004917 carbon fiber Substances 0.000 claims abstract description 35
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 27
- 239000001257 hydrogen Substances 0.000 claims abstract description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000003054 catalyst Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229940011182 cobalt acetate Drugs 0.000 claims abstract description 13
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 claims abstract description 13
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 11
- BVTBRVFYZUCAKH-UHFFFAOYSA-L disodium selenite Chemical compound [Na+].[Na+].[O-][Se]([O-])=O BVTBRVFYZUCAKH-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000012046 mixed solvent Substances 0.000 claims abstract description 11
- 239000002127 nanobelt Substances 0.000 claims abstract description 11
- 229960001471 sodium selenite Drugs 0.000 claims abstract description 11
- 235000015921 sodium selenite Nutrition 0.000 claims abstract description 11
- 239000011781 sodium selenite Substances 0.000 claims abstract description 11
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 41
- 229910052799 carbon Inorganic materials 0.000 claims description 35
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 230000007062 hydrolysis Effects 0.000 claims description 6
- 238000006460 hydrolysis reaction Methods 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 2
- 238000010189 synthetic method Methods 0.000 abstract description 2
- GAIMSHOTKWOMOB-UHFFFAOYSA-N [Se]=[Co]=[Se] Chemical compound [Se]=[Co]=[Se] GAIMSHOTKWOMOB-UHFFFAOYSA-N 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 description 15
- 238000012360 testing method Methods 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000013112 stability test Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000000970 chrono-amperometry Methods 0.000 description 2
- INPLXZPZQSLHBR-UHFFFAOYSA-N cobalt(2+);sulfide Chemical compound [S-2].[Co+2] INPLXZPZQSLHBR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- QIJNJJZPYXGIQM-UHFFFAOYSA-N 1lambda4,2lambda4-dimolybdacyclopropa-1,2,3-triene Chemical compound [Mo]=C=[Mo] QIJNJJZPYXGIQM-UHFFFAOYSA-N 0.000 description 1
- LLYXJBROWQDVMI-UHFFFAOYSA-N 2-chloro-4-nitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1Cl LLYXJBROWQDVMI-UHFFFAOYSA-N 0.000 description 1
- 229910039444 MoC Inorganic materials 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Carbon And Carbon Compounds (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a cobalt diselenide modified carbon fiber composite material and a preparation method and application thereof. The invention is characterized in that the cobalt diselenide modified carbon fiber composite material is formed by loading a cobalt diselenide nanobelt on the surface of a carbon fiber felt and is prepared by the following steps: dissolving cobalt acetate and sodium selenite in a mixed solvent consisting of diethylenetriamine and water, then adding the carbon fiber felt, conducting reaction for 12-18 hours at 150-200 DEG C, and washing and drying the product to obtain the cobalt diselenide modified carbon fiber composite material. The cobalt diselenide modified carbon fiber composite material can be used as a catalyst in a water electro-catalysis hydrogen evolution reaction. The cobalt diselenide modified carbon fiber composite material has a simple synthetic method, is lower in production cost and can be produced in a large scale. The prepared cobalt diselenide modified carbon fiber composite material can be used as a catalyst in the water electro-catalysis hydrogen evolution reaction and has high activity and favorable stability.
Description
Technical field
The present invention relates to a kind of novel band shape two cobaltous selenide modifying carbon fibers (CoSe
2/ CF) composite
Background technology
Along with the fast development of World Economics, the whole world increases day by day to the demand of the energy.Hydrogen, as a kind of clean, the desirable energy carrier of reusable edible, is more and more subject to everybody attention.And electro-catalysis hydrolytic hydrogen production is as one of promising hydrogen production process, be still at present utilize with platinum be the precious metal material of representative as catalyst, therefore designing catalyst that is cheap, efficient, stable, that can prepare on a large scale is the key realizing water electrolysis hydrogen production practical application.
Cobalt-based material, due to its earth rich reserves, synthesizes simple and easy, and has important potential application at stored energy and conversion art, is widely used in electro chemical catalyst research.Especially cobalt-based chalcogenide (cobalt sulfide, two cobaltous selenides etc.) has higher catalytic activity in electro-catalysis hydrolysis liberation of hydrogen, but due in acid medium, long reaction can cause the corrosion of this type of catalyst and come off.Therefore, design is prepared efficient, and macroscopical catalysis material of good stability is still a great difficult problem in catalytic nanometer field.And material with carbon element (carbon ball, CNT, carbon fiber, Graphene etc.), because it is under strong acid and strong base condition, has good stability, be usually used to do catalyst cupport, thus improve catalyst electric conductivity and stability.But the shortcomings such as these material ubiquity low yields, high consumption, synthesis difficulty and poor stability, use for a long time under can not meeting practical application condition, and synthetic material still rests on micro-scale mostly, how to reach the great difficult problem that the catalyst once preparing Large-scale Macro yardstick high stability is current nano-catalytic field.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of two cobaltous selenide modifying carbon fibers (CoSe
2/ CF) composite, and provide its preparation method.
Another object of the present invention is to provide above-mentioned CoSe
2the application of/CF nano composite material in electrocatalytic hydrogen evolution field.
In order to realize object of the present invention, adopt following technical scheme:
CoSe of the present invention
2/ CF composite, its feature is: described CoSe
2/ CF composite has two cobaltous selenide nanobelts at the area load of carbon fiber felt.
Wherein, described carbon fiber felt is carbon felt, graphitized carbon fibre felt or pre-oxidation graphite felt.
The above-mentioned CoSe of the present invention
2the preparation method of/CF composite, its feature is to carry out as follows:
A, the 2:1 mixing by volume of diethylenetriamine and water is formed mixed solvent, be that cobalt acetate and the sodium selenite of 1:1 is dissolved in described mixed solvent by mol ratio, then add the carbon fiber felt through ultrasonic cleaning, form mixture; The pass of the quality of the mole of described cobalt acetate, the volume of described mixed solvent and described carbon fiber felt is: 1 ~ 3mmol:35 ~ 40mL:0.05 ~ 0.5g;
B, described mixture be transferred in hydrothermal reaction kettle and seal, then in an oven with the thermotonus 12 ~ 18 hours of 150 ~ 200 DEG C, take out and be cooled to room temperature after completing reaction; Products therefrom is with after ethanol washing, and vacuum drying, obtains CoSe
2/ CF composite.
The present invention, by adjustment cobalt acetate and the consumption of sodium selenite and the relation of carbon fiber felt quality, can control the load capacity of carbon fiber surface two cobaltous selenide nanobelt.
CoSe of the present invention
2/ CF composite can be used as the catalyst of electro-catalysis hydrolysis evolving hydrogen reaction.
CoSe of the present invention
2/ CF composite is used for the preparation of electro-catalysis hydrolysis liberation of hydrogen test electrode and comprises the following steps:
(1) three-electrode system is adopted, with CoSe of the present invention
2/ CF composite is as working electrode, and saturated calomel electrode is as reference electrode, and platinized platinum is as to electrode.
(2) electrolyte is the sulfuric acid solution of 0.5mol/L, logical argon shield before test.Electro-catalysis hydrolysis hydrogen evolution activity is tested under room temperature condition.
(3) stability test is in the sulfuric acid solution of 0.5mol/L, within the scope of fixed voltage after repeatedly circulating, tests its activity; Another kind method is under constant voltage, tests its curent change.
Compared with the prior art, beneficial effect of the present invention is embodied in:
CoSe of the present invention
2the synthetic method of/CF composite is simple, and low production cost, can realize large-scale production, the high activity adopting the present invention to prepare and the CoSe of good stability
2/ CF composite is used as the catalyst of electro-catalysis hydrolysis evolving hydrogen reaction, can be widely used in various catalytic hydrogen evolution field, especially brine electrolysis industry and electrochemistry hydrogen manufacturing system etc.
Accompanying drawing explanation
The CoSe of Fig. 1 prepared by the embodiment of the present invention 1
2the SEM figure of/CF composite, illustration is that partial enlargement SEM schemes;
The CoSe of Fig. 2 prepared by the embodiment of the present invention 2
2the SEM figure of/CF composite, illustration is that partial enlargement SEM schemes;
The CoSe of Fig. 3 prepared by the embodiment of the present invention 2
2/ CF composite Local C oSe
2the TEM figure of nanobelt;
Fig. 4 is pure CoSe
2, pure carbon fiber felt and the CoSe prepared by example of the present invention 2
2the XRD collection of illustrative plates of/CF composite;
The CoSe of Fig. 5 prepared by the embodiment of the present invention 2
2the STEM-mapping figure of/CF composite, white dot represents Co element, and gray corrosion represents Se element;
The CoSe of Fig. 6 prepared by the embodiment of the present invention 2
2the EDS figure of/CF composite;
The CoSe of Fig. 7 prepared by the embodiment of the present invention 2
2the XPS figure of/CF composite;
Fig. 8 is pure carbon felt, carbon felt absorption equivalent CoSe
2with the CoSe prepared by the embodiment of the present invention 2
2the electrocatalytic hydrogen evolution catalytic activity test of/CF composite;
Fig. 9 is carbon felt absorption equivalent CoSe
2with the CoSe prepared by the embodiment of the present invention 2
2the electrocatalytic hydrogen evolution catalytic stability test of/CF composite;
The CoSe of Figure 10 prepared by example 2 of the present invention
2the chronoamperometry electrocatalytic hydrogen evolution catalytic stability test of/CF composite;
The CoSe of Figure 11 prepared by the embodiment of the present invention 3
2the SEM figure of/CF composite, illustration is that partial enlargement SEM schemes;
Figure 12 is for the CoSe prepared by the embodiment of the present invention 1, embodiment 2 and embodiment 3
2/ CF composite does the test of electrocatalytic hydrogen evolution catalytic activity;
The CoSe of the extension of Figure 13 prepared by the embodiment of the present invention 4
2with graphitized carbon fibre felt and CoSe
2with the photo in kind of carbon felt composite material.
Detailed description of the invention
In following embodiment, carbon felt used, graphitized carbon fibre felt and pre-oxidation graphite felt are bought from Gansu Hao Shi carbon fiber Co., Ltd.
Embodiment 1
By carbon felt, (totally three pieces, volume is respectively 1 × 1 × 0.3cm
3, 1 × 1.5 × 0.3cm
3with 1 × 2 × 0.3cm
3, gross mass is about 0.2g) and be positioned over ultrasonic removal surface and oil contaminant in the mixed solution of second alcohol and water.
The sodium selenite of the cobalt acetate and 1mmol that take 1mmol is dissolved in the mixed solvent of 26mL diethylenetriamine and 13mL water formation, stirs 10 minutes.The carbon fiber felt handled well is dipped in wherein, stirs 1 hour, form mixture.Said mixture to be transferred in teflon-lined 50mL reactor and to seal, reacting 16 hours at 180 DEG C in temperature control oven, take out and be cooled to room temperature after completing reaction; Handy ethanol purge, and in the vacuum environment of 60 DEG C dry 6 hours, obtain CoSe
2/ CF composite.
CoSe prepared by the present embodiment
2as shown in Figure 1, illustration is partial enlargement SEM picture to the SEM figure of/CF composite.Can see from diagram, carbon fiber surface uniform winding load CoSe
2nanobelt.
Embodiment 2
By graphitized carbon fibre felt, (totally three pieces, volume is respectively 1 × 1 × 0.5cm
3, 1 × 1.5 × 0.5cm
3with 1 × 2 × 0.5cm
3, gross mass is about 0.2g) and be positioned over ultrasonic removal surface and oil contaminant in the mixed solution of second alcohol and water.
The sodium selenite of the cobalt acetate and 2mmol that take 2mmol is dissolved in the mixed solvent of 26mL diethylenetriamine and 13mL water formation, stirs 10 minutes.The graphitized carbon fibre felt handled well is dipped in wherein, stirs 1 hour, form mixture.
Said mixture to be transferred in teflon-lined 50mL reactor and to seal, then reacting 16 hours at 180 DEG C in temperature control oven, take out and be cooled to room temperature after completing reaction; Product ethanol purge, and in the vacuum environment of 60 DEG C dry 6 hours, obtain CoSe
2/ CF composite.
CoSe prepared by the present embodiment
2as shown in Figure 2, illustration is partial enlargement SEM picture to the SEM figure of/CF composite, can find out carbon fiber surface uniform load CoSe
2nanobelt, and the increase of input amount along with cobalt acetate and sodium selenite, the CoSe of carbon fiber surface load
2nanobelt is tightr;
Fig. 3 is the TEM picture that the present embodiment is scattered in two cobaltous selenide nanobelts of carbon fiber surface, can see the CoSe of load at carbon fiber surface
2for soft, ultra-thin banded structure;
Fig. 4 is pure CoSe
2, pure carbon felt and the CoSe prepared by the present embodiment
2the XRD collection of illustrative plates of/CF composite, shows the CoSe of the carbon fibre of composite material successful load in surface prepared by the present embodiment
2;
The CoSe of Fig. 5 prepared by the present embodiment
2the STEM-mapping figure of/CF composite, white dot represents Co element, gray corrosion represents Se element, we can be clearly seen that Co and Se element is evenly distributed on carbon fiber surface (because carbon fiber is oversize, the impact of copper mesh substrate carbon film cannot be got rid of, so the distribution diagram of element of corresponding carbon fiber cannot be obtained), show that the present invention has successfully prepared CoSe equally
2/ CF composite;
The CoSe of Fig. 6 prepared by the present embodiment
2the EDS figure of/CF, shows the successful load C oSe in carbon fibre of composite material surface prepared by the present embodiment
2, in figure, the peak of Cu and C all comes from the copper mesh in test;
The CoSe of Fig. 7 prepared by example of the present invention
2the XPS figure of/CF, shows the successful load C oSe in carbon fibre of composite material surface prepared by the present embodiment
2, N element is mainly because there is the existence of amido in reaction system;
Fig. 8 is pure carbon felt, carbon felt absorption equivalent CoSe
2(by equivalent CoSe
2ultrasonic disperse, in ethanolic solution, is got the physical absorption of isopyknic carbon felt and is contained CoSe
2the ethanolic solution post-drying of nanobelt) and CoSe prepared by example of the present invention
2the electrocatalytic hydrogen evolution catalytic activity test of/CF composite.Can see that pure carbon felt has very weak electrocatalytic hydrogen evolution active, carbon felt absorption equivalent CoSe
2catalyst has higher initial overvoltage and is about 173mV, and the CoSe prepared by the present embodiment
2the initial overvoltage of/CF composite can be reduced to 89mV, and increases fast along with voltage reduces current density, can reach 10mA cm at overpotential 149mV
-2current density, be better than other non-precious metal catalysts (tungsten sulfide, molybdenum sulfide and graphene composite catalyst, molybdenum carbide, cobalt sulfide, cobaltous selenide etc.), show that the composite prepared by the present invention can effectively improve electrocatalytic hydrogen evolution activity, and simple by physical absorption CoSe
2can not the essential catalytic activity improving composite.
Fig. 9 is carbon felt absorption equivalent CoSe
2with the CoSe prepared by example of the present invention
2the electrocatalytic hydrogen evolution catalytic stability test of/CF composite, as can be seen from the figure after circulation 40,000 is enclosed, carbon felt absorption equivalent CoSe
2catalyst activity decay is a lot, and the CoSe prepared by example of the present invention
2the catalytic activity of/CF composite does not almost change, and shows the CoSe prepared by example of the present invention
2/ CF composite has excellent catalytic stability in acid medium;
The CoSe of Figure 10 prepared by example of the present invention
2the chronoamperometry test electrocatalytic hydrogen evolution catalytic stability of/CF composite, as can be seen from the figure under different constant overpotential, there is not obvious decay in the test after-current density through 24 hours, therefore, CoSe prepared by same proof the present embodiment
2/ CF composite as electrocatalytic hydrogen evolution catalyst, there is excellent stability.
Embodiment 3
By pre-oxidation graphite felt, (totally three pieces, volume is respectively 1 × 1 × 0.5cm
3, 1 × 1.5 × 0.5cm
3with 1 × 2 × 0.5cm
3, gross mass is about 0.2 gram) and be positioned over ultrasonic removal surface and oil contaminant in the mixed solution of second alcohol and water.
The sodium selenite of the cobalt acetate and 3mmol that take 3mmol is dissolved in the mixed solution of 26mL diethylenetriamine and 13mL water formation, stirs 10 minutes.
The pre-oxidation graphite felt handled well is dipped in above-mentioned mixed solvent, stirs 1 hour, form mixture.Said mixture to be transferred in teflon-lined 50mL reactor and to seal, then reacting 16 hours at 180 DEG C in temperature control oven, take out and be cooled to room temperature after completing reaction; Product ethanol purge, and in the vacuum environment of 60 DEG C dry 6 hours, obtain CoSe
2/ CF composite.
The CoSe of Figure 11 prepared by the present embodiment
2the SEM figure of/CF composite, illustration is partial enlargement SEM picture, can see when after the consumption continuing to improve cobalt acetate and sodium selenite, the CoSe of carbon fiber surface load
2not not banded structure, because the concentration increase dropping into predecessor causes carbon fiber surface CoSe
2growth is more tight, finally becomes laminated structure.
Figure 12 is for the CoSe prepared by the embodiment of the present invention 1, embodiment 2 and embodiment 3
2/ CF composite does the contrast test of electrocatalytic hydrogen evolution catalytic activity, can see along with CoSe
2the increase of carrying capacity, the catalytic activity of composite is significantly improved, and the embodiment 2 of high carrying capacity and the composite prepared by embodiment 3 are at current density 10mA cm
-2time, all show lower overpotential, be better than more existing cobalt-based composite catalysts, but too high carrying capacity can suppress the catalysis performance of composite under high overpotential, the CoSe prepared by embodiment 2
2the electrocatalytic hydrogen evolution activity that/CF composite material exhibits is more outstanding.
Embodiment 4
By graphitized carbon fibre felt, (volume is 5 × 10 × 0.5cm
3, quality is about 2.2 grams) and carbon felt (volume is 5 × 10 × 0.3cm
3, quality is about 2.3 grams) and be positioned over ultrasonic removal surface and oil contaminant in the mixed solution of second alcohol and water.
The sodium selenite of the cobalt acetate and 10mmol that take 10mmol is dissolved in the mixed solution of 260mL diethylenetriamine and 130mL water formation, stirs 10 minutes.The graphitized carbon fibre felt handled well and carbon felt are dipped in above-mentioned mixed solvent, stir 1 hour, form mixture.Said mixture to be transferred in teflon-lined 500mL reactor and to seal, then reacting 16 hours at 180 DEG C in temperature control oven, take out and be cooled to room temperature after completing reaction; Product ethanol cleans, and in the vacuum environment of 60 DEG C dry 6 hours, obtain CoSe
2/ CF composite.
The photo in kind of the CoSe2 of the extension of Figure 13 prepared by the present embodiment and graphitized carbon fibre felt composite material and CoSe2 and carbon felt composite material.
Claims (5)
1. two cobaltous selenide modifying carbon fibers composites, is characterized in that: described two cobaltous selenide modifying carbon fibers composites have two cobaltous selenide nanobelts at the area load of carbon fiber felt.
2. composite according to claim 1, is characterized in that: described carbon fiber felt is carbon felt, graphitized carbon fibre felt or pre-oxidation graphite felt.
3. a preparation method for two cobaltous selenide modifying carbon fibers composites described in claim 1, is characterized in that carrying out as follows:
A, the 2:1 mixing by volume of diethylenetriamine and water is formed mixed solvent, be that cobalt acetate and the sodium selenite of 1:1 is dissolved in described mixed solvent by mol ratio, then add the carbon fiber felt through ultrasonic cleaning, form mixture; The pass of the quality of the mole of described cobalt acetate, the volume of described mixed solvent and described carbon fiber felt is: 1 ~ 3mmol:35 ~ 40mL:0.05 ~ 0.5g;
B, described mixture be transferred in hydrothermal reaction kettle and seal, then in an oven with the thermotonus 12 ~ 18 hours of 150 ~ 200 DEG C, take out and be cooled to room temperature after completing reaction; Products therefrom is with after ethanol washing, and vacuum drying, obtains two cobaltous selenide modifying carbon fibers composites.
4. preparation method according to claim 3, is characterized in that: by adjustment cobalt acetate and the consumption of sodium selenite and the relation of carbon fiber felt quality, controls the load capacity of the surperficial two cobaltous selenide nanobelts of carbon fiber felt.
5. an application for two cobaltous selenide modifying carbon fibers composites described in claim 1, is characterized in that: as the catalyst of electro-catalysis hydrolysis evolving hydrogen reaction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706177.3A CN104399496B (en) | 2014-11-27 | 2014-11-27 | A kind of two cobaltous selenide modifying carbon fibers composites and its preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706177.3A CN104399496B (en) | 2014-11-27 | 2014-11-27 | A kind of two cobaltous selenide modifying carbon fibers composites and its preparation method and application |
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|---|---|
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| CN104399496B CN104399496B (en) | 2017-07-28 |
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|---|---|---|---|
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428647A (en) * | 2015-11-14 | 2016-03-23 | 华中科技大学 | Cobalt diselenide/carbon nanomaterial, preparation method therefor and application thereof |
| CN105597792A (en) * | 2016-03-03 | 2016-05-25 | 武汉理工大学 | Mesoporous nanosheet structure ferronickel selenide material and preparing method and application thereof |
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| CN105789584A (en) * | 2016-03-27 | 2016-07-20 | 华南理工大学 | Cobalt selenide/carbon sodium ion battery composite negative electrode material as well as preparation method and application of cobalt selenide/carbon-sodium ion battery composite negative electrode material |
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| CN109012704A (en) * | 2018-08-23 | 2018-12-18 | 暨南大学 | A kind of two cobaltous selenide of nanometer load carbon nano-fiber composite material and its preparation method and application |
| CN109174146A (en) * | 2018-07-24 | 2019-01-11 | 安徽师范大学 | One-dimensional basic cobaltous carbonate@dimensional Co Se/NF heterojunction structure composite material and preparation method and application |
| CN109962229A (en) * | 2019-04-16 | 2019-07-02 | 福州大学 | A kind of two cobaltous selenides of molybdenum doping sheet/graphene combination electrode material preparation method |
| CN110508298A (en) * | 2019-09-04 | 2019-11-29 | 温州涂屋信息科技有限公司 | A kind of AlOOH-CoSe2O compoiste material and its preparation method are analysed in electro-catalysis |
| CN112436158A (en) * | 2020-11-06 | 2021-03-02 | 扬州大学 | Anode catalyst of alcohol fuel cell |
| CN112875657A (en) * | 2021-02-03 | 2021-06-01 | 吉林大学 | Preparation method and application of manganese selenide/reduced graphene oxide nanocomposite |
| CN113584519A (en) * | 2021-07-09 | 2021-11-02 | 哈尔滨工业大学（深圳） | Electrocatalyst and preparation method and application thereof |
| CN114146714A (en) * | 2021-12-03 | 2022-03-08 | 哈尔滨师范大学 | Boron cluster modified cobalt diselenide/carbon nanotube composite material, and preparation method and application thereof |
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| CN105428647B (en) * | 2015-11-14 | 2017-08-11 | 华中科技大学 | A kind of two cobaltous selenides/carbon nanomaterial and preparation method and application |
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| CN106492846B (en) * | 2016-10-12 | 2018-11-27 | 吉林大学 | It is a kind of efficiently to crack low overpotential elctro-catalyst of aquatic products hydrogen and preparation method thereof |
| CN109174146B (en) * | 2018-07-24 | 2021-10-29 | 安徽师范大学 | One-dimensional basic cobalt carbonate @ two-dimensional CoSe/NF heterostructure composite material and preparation method and application thereof |
| CN109174146A (en) * | 2018-07-24 | 2019-01-11 | 安徽师范大学 | One-dimensional basic cobaltous carbonate@dimensional Co Se/NF heterojunction structure composite material and preparation method and application |
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| CN109962229A (en) * | 2019-04-16 | 2019-07-02 | 福州大学 | A kind of two cobaltous selenides of molybdenum doping sheet/graphene combination electrode material preparation method |
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| CN112436158A (en) * | 2020-11-06 | 2021-03-02 | 扬州大学 | Anode catalyst of alcohol fuel cell |
| CN112436158B (en) * | 2020-11-06 | 2022-09-13 | 扬州大学 | Anode catalyst of alcohol fuel cell |
| CN112875657A (en) * | 2021-02-03 | 2021-06-01 | 吉林大学 | Preparation method and application of manganese selenide/reduced graphene oxide nanocomposite |
| CN113584519A (en) * | 2021-07-09 | 2021-11-02 | 哈尔滨工业大学（深圳） | Electrocatalyst and preparation method and application thereof |
| CN114146714A (en) * | 2021-12-03 | 2022-03-08 | 哈尔滨师范大学 | Boron cluster modified cobalt diselenide/carbon nanotube composite material, and preparation method and application thereof |
| CN114146714B (en) * | 2021-12-03 | 2023-11-17 | 哈尔滨师范大学 | Boron cluster modified cobalt diselenide/carbon nanotube composite material and preparation method and application thereof |
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